1236629 has 2 divisors, whose sum is σ = 1236630. Its totient is φ = 1236628.

The previous prime is 1236623. The next prime is 1236643. The reversal of 1236629 is 9266321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874225 + 362404 = 935^2 + 602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1236629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1236623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618314 + 618315.

It is an arithmetic number, because the mean of its divisors is an integer number (618315).

2^1236629 is an apocalyptic number.

It is an amenable number.

1236629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236629 is an equidigital number, since it uses as much as digits as its factorization.

1236629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 1236629 is about 1112.0382187677. The cubic root of 1236629 is about 107.3362641673.

The spelling of 1236629 in words is "one million, two hundred thirty-six thousand, six hundred twenty-nine".